Computer Case Vacuum?

[BGRing]

Would it be a good idea to turn my case into a vacuum by having all of my case fans exhaust? Granted, there would still be plenty of air in there, but if its constantly removing the air and the heat from the case, wouldn't it cool alot better? Less air = less heat.

Sum it up.

If you keep it Positive pressure (Slightly higher than outside) then you will not over power any smaller items. <GPU fan kits that suck air out or PSU fans that suck air out.> keeping a slightly higher pressure inside will only aid those items 😀

Of cause I am not talking about Sealing the case. and properly placed Exhaust fans are a Must. (But they may be Not needed except that a "In fan" and "out fan" help each other. <Some inlet fans are also place in locations that direct flow, and some Exhaust fans are strategically placed to remove air at a desired location.

Keep it Positive. but keep complete.

PS.
I for one knew that you were not talking about sealing your case and attempting to keep a low pressure inside the case.
It was clear that you were talking about Vacume as in the resultant effect of all fans Sucking and none blowing.

The only part that was wrong was the Less Air = Less Heat. Well its not actually wrong but rather. you were just looking at it incompletely. (Less air Pressure/Air flow = Less Heat per Cubic foot of air/Per Cubic foot of air per minute) IE if you are moving 1CFM at low pressure you are moving less heat. if you are moving 1CFM at a higher pressure you are moving more heat)

Good luck and Happy new year 😉

Kenzz0 must think Everyone is an Idiot if he Misinterprets clear explanations such as your first post.


Bryce.

Edited to Add Bold

 

[WR]

This is a glass full vs. glass empty argument. In either case, water still occupies the lower half of the glass, and air occupies the upper half.

By having only exhaust fans, yes the fans are closest to the act of removing heat from the case, but the higher pressure air outside will want to seep in, effectively pumping cool air into the case.

By having only intake fans, the fans are closest to the act of pumping cold air into the case, but the cool air will displace an equal volume of hot air and force it out the case.

There are temperature changes associated with adjusting barometric pressure and holding all other factors constant, but the amount of pressure gradient here with commercial case fans is insignificant.

The maximum overall cooling you can achieve with pumps of a given strength is with laminar flow. That means evening out the resistance to air flow in all paths and minimizing the overall resistance, but also sealing all air holes except for entrance and exit, not half sealing the case to artificially increase resistance at intake or exhaust.

Because modern computer cases are imperfectly sealed, it is ideal to place an equal amount of intake and exhaust fans, rather than bunching them up at either, so that you normalize internal pressure with outside and minimize the tendency for air to take a shortcut through these leaks.

Oh, I do have a simpler idea for decreasing the air temperature in your case. Assuming you don't live in a humid climate, mix water with air at intake, up to 80% or 95% humidity (whichever your electronics are rated up to). The high heat of evaporation and a good mixer will cause the intake air to drop noticeably below ambient temperature.

Or, better yet, use water cooling and spray water mist or drip water down the outside of your water loop radiator.... This would be one of the few possibilities to cool a processor below ambient without active refrigeration.

 

[BGRing]

Would it be a good idea to turn my case into a vacuum by having all of my case fans exhaust? Granted, there would still be plenty of air in there, but if its constantly removing the air and the heat from the case, wouldn't it cool alot better? Less air = less heat.

Try One of these . (Use the Inlet to this one for the Extraction point to your case)

VCUN 225x103 1.5 4
or the
VCUN 280x127 3.0-2 as the Picture graph show this one really Sucks ;D ( this one is a little over the Mains limit 😉 well a lot actually so not able to be used conveniently)

PS. Do make sure to not let little children to close to your PC. (Oh and you may need to Strengthen the case to preventing it from imploding 😀 Oh and a separate power point (NB here in Australia we are 240V 50hz and most power points are 2kw)

Just a giggle 😉